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2542 Calpurnia (1980 CF)
Classification: Main-belt Asteroid          SPK-ID: 2002542
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07728461615750508 2.1213e-08  
a 3.134487745154737 1.5761e-08 au
q 2.892240062920049 6.4679e-08 au
i 4.634594979653794 4.0109e-07 deg
node 145.6000423977108 1.7686e-06 deg
peri 49.83691601316833 9.6899e-06 deg
M 135.0796305337788 1.1717e-05 deg
tp 2458635.936193405890
(2019-Jun-01.43619341)
6.3396e-05 TDB
period 2026.974528224009
5.55
1.5288e-05
4.186e-08
d
yr
n .1776045998542587 1.3395e-09 deg/d
Q 3.376735427389424 1.6979e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2687  
   data-arc span      24508 days (67.10 yr)  
   first obs. used      1954-07-03  
   last obs. used      2021-08-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42412  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 08:46:40  

Additional Information
 Earth MOID = 1.89483 au 
 Jupiter MOID = 1.58328 au 
 T_jup = 3.203 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456714.5 (2014-Feb-26.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0734093196906625 2.1267e-08  
q 2.900473761616898 6.4661e-08 au
tp 2456597.282754620805
(2013-Oct-31.78275462)
6.2339e-05 TDB
node 145.7267735381687 1.7757e-06 deg
peri 47.26109745658975 1.0211e-05 deg
i 4.620639951467467 4.0024e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2687  
   data-arc span      24508 days (67.10 yr)  
   first obs. used      1954-07-03  
   last obs. used      2021-08-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42412  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 08:46:40  

Additional Information
 Jupiter MOID = 1.58328 au 
 T_jup = 3.203 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.522768959302318E-16 -1.345380168892524E-15 2.354869815300651E-13 3.532407366862042E-15 -1.395525768029564E-15 -7.478189085286232E-16
q -1.345380168892524E-15 4.181038064635573E-15 -5.485608415051828E-13 -1.087015478476724E-14 3.904471504668386E-14 2.17122398675261E-15
tp 2.354869815300651E-13 -5.485608415051828E-13 3.886099674169693E-9 2.984906927037638E-11 6.16365549312284E-10 -7.805230196533803E-12
node 3.532407366862042E-15 -1.087015478476724E-14 2.984906927037638E-11 3.153172215825293E-12 1.980396533013188E-12 -3.291454256887726E-13
peri -1.395525768029564E-15 3.904471504668386E-14 6.16365549312284E-10 1.980396533013188E-12 1.042719604257766E-10 -9.154715457756428E-13
i -7.478189085286232E-16 2.17122398675261E-15 -7.805230196533803E-12 -3.291454256887726E-13 -9.154715457756428E-13 1.601883550968424E-13

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.71   n/a MPO636100  
diameter diameter 20.854 km 0.281 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 16.9 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Behrend, R. (2019) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.102   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

2542 Calpurnia (1980 CF)          Discovered 1980-Feb-11 by Bowell, E. at Flagstaff (AM)
Discovered at the Anderson Mesa station, which is operated by the Lowell Observatory.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1917-Nov-29 02:19 00:02 Jupiter 1.87228378331904 1.87228269903272 1.87228486760515 2.94564570832228 2.7878355799514 2421561.596205671 2.13249086425058 44.5534398593664 3.77175241240693 33.3777243487857 5964485.2265891 T 45 CATAB v2.0g-lin.ifort 2021-Aug-25 08:48:22 2021-Aug-25 08:48
1928-Feb-07 13:08 00:02 Jupiter 1.59370791403342 1.59370763935213 1.59370818871597 2.12226512251051 1.85500700019336 2425284.047373640 1.93634028858147 116.479559594138 2.77451211131454 86.058734634204 5147986.97197472 T 45 CATAB v2.0g-lin.ifort 2021-Aug-25 08:48:22 2021-Aug-25 08:48
1938-Apr-25 16:51 00:02 Jupiter 1.80448458337558 1.80448381191832 1.80448535483336 2.80417630768271 2.63146491396282 2429014.202077435 1.65680365234474 66.9841682069422 4.69748458585429 -66.4485164078087 7063466.4425437 T 45 CATAB v2.0g-lin.ifort 2021-Aug-25 08:48:22 2021-Aug-25 08:48
2000-Sep-29 01:31 < 00:01 Jupiter 1.80123038397076 1.80123012426085 1.80123064368067 2.66015218393308 2.47707819602425 2451816.563316707 0.359005554986292 9.87278842592445 3.88991739262212 48.6502814445227 5950778.9748863 T 45 CATAB v2.0g-lin.ifort 2021-Aug-25 08:48:22 2021-Aug-25 08:48
2010-Dec-08 23:15 < 00:01 Jupiter 1.59011707592509 1.59011685479211 1.59011729705799 2.13069325845187 1.8639997547973 2455539.468433986 0.135589276886441 8.892356177228 2.44435809608222 79.8032485949549 4971969.84993091 T 45 CATAB v2.0g-lin.ifort 2021-Aug-25 08:48:22 2021-Aug-25 08:48
2021-Feb-26 15:49 < 00:01 Jupiter 1.86515532987527 1.86515515323759 1.86515550651295 3.02492694446594 2.87087504653198 2459272.158964396 0.150396626876937 6.32788612978321 4.00559839998563 -24.365076228185 8229101.28193355 T 45 CATAB v2.0g-lin.ifort 2021-Aug-25 08:48:22 2021-Aug-25 08:48
2083-Aug-01 12:51 00:02 Jupiter 1.74638636974074 1.74638584119081 1.74638689829087 2.44441034622451 2.2372110250681 2482073.035155851 1.50317189187482 42.5977373590968 1.79460870135095 73.0093806759574 6170120.87668121 T 45 CATAB v2.0g-lin.ifort 2021-Aug-25 08:48:22 2021-Aug-25 08:48
2093-Oct-09 01:19 00:02 Jupiter 1.60803963901521 1.60803926056112 1.60804001747068 2.20177764458831 1.94790661475632 2485794.555110182 1.72903616251753 100.708697216453 1.35263070069728 -89.9321333449053 5295413.7392019 T 45 CATAB v2.0g-lin.ifort 2021-Aug-25 08:48:22 2021-Aug-25 08:48
2104-Jan-01 04:10 00:02 Jupiter 1.94208374859856 1.94208275549525 1.9420847417022 3.30539285940494 3.17070020456269 2489529.673583772 1.88274228933261 64.4805536637935 4.64787194520185 -51.1035522652975 9196858.62688832 T 45 CATAB v2.0g-lin.ifort 2021-Aug-25 08:48:22 2021-Aug-25 08:48
2166-Jun-02 12:28 00:03 Jupiter 1.69364667879296 1.69364564502317 1.69364771256487 2.25520270034942 2.02131245011284 2512328.019118745 3.35806081511249 118.479377835395 0.72081613452621 80.5816516452882 5450320.18811051 T 45 CATAB v2.0g-lin.ifort 2021-Aug-25 08:48:22 2021-Aug-25 08:48
2176-Aug-10 18:26 00:04 Jupiter 1.63857156830815 1.63857062417049 1.63857251245354 2.31483901304525 2.07957324761319 2516050.268048146 3.54935856610132 199.784730220294 1.36981083038133 -86.4824128369521 5609781.75498242 T 45 CATAB v2.0g-lin.ifort 2021-Aug-25 08:48:22 2021-Aug-25 08:48

Alternate Designations
 1980 CF = 1972 XN2 = 1976 OE 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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